improve sql parser
bugfix
 #557 添加对log4jdbc支持，方便调试打印mybatis动态SQL。
bugfix
Merge pull request #561 from yakolee/master

修复数值计算bug
Merge pull request #558 from yangl/master

 #557 添加对log4jdbc支持，方便调试打印mybatis动态SQL。
update import in JdbcUtils
Merge pull request #554 from lizhanhui/master

Add a new profile: mac-profile-oracle-jdk to support jdk 1.7+ on mac
bugfix:union子查询bug
Merge pull request #563 from yakolee/master

bugfix:union子查询bug #552
update version to 1.0.6
Merge pull request #564 from yakolee/master

update version to 1.0.6
fix testcase
Merge pull request #565 from yakolee/master

fix testcase
add license
Merge pull request #566 from yakolee/master

add license
bugfix for create table t as select ...
version:1.0.7
Merge pull request #567 from yakolee/master

bugfix&update version to 1.0.7
Merge branch 'master' of github.com:lizhanhui/druid